DoubleClick just released a retrospective (pdf) of the online advertising decade, which officially started with the AT&T's banner on Wired. Ten years on, DoubleClick's research director predicts: "The new face of advertising is almost certain to be more entertaining, more informative, more timely, more relevant, more authentic and more in tune with customers." For a nostalgic glance back and an optimistic look forward, go here.